peterson



Oct. 26, 1937. B. A. PETERSON- COMBUSTION CHAMPER.

Filed Jan. 22, 1937 atented ()cto 26, W37

' eous'rroN enema Bernard A. Peterson, Detroit, Mich. ApplicationJanuary 22, 1937, Serial No. 121,798

1 (Claim.

This application relates to combustion chambers, particularly for oilburners.

An object of the present invention is to provide a combustion chamberthat will distribute the heat of combustion of an oil flame uniformlythroughout a furnace and prevent too rapid an escape of hot gases.

Another object is to provide a combustion chamber that will dampencombustion noise.

A principal object is to provide a chamber that, while accomplishing theother objects, will be durable and'will withstand the stresses ofexpansion and contraction. This object is accom- I plished by building achamber out of a number of pieces which may expand and contractindependently of each other, since they are not cemented together, butmerely rest against each other. Thus it is not possible for an internalstress set up at one point of the structure to travel and multiplythrough a large part of the structure and cause a rupture.

The present construction also has the advantages of providing easy entryinto the furnace and easy handling of the individual pieces whichcomprise the chamber.

A further object of this invention is to provide a vertical furnaceconstruction including as an element thereof a vertical combustionchamber made in accordance with the invention.

For an understanding of the invention, reference should be had to theaccompanying drawing. In this drawing,

Fig. 1 shows a furnaceequipped with a combustion chamber of theinvention;

Fig. 2 shows the combustion chamber per se with a combustion bafileassociated therewith.

Referring to the drawing, it will be seen that Fig. 1 shows a verticalfurnace A having a fire door B and an oil burner pipe 0 which projectsthereinto and through a fire resistant cement backing D within which isa vertical refractory material combustion chamber E, the latterincluding a base and upon which is a shell.

The base or bottom consists of two semi-circular sectors Ill on whichrest two shell segments II and I2, each of which is cast as half of ahollow cylinder. On top of the cylindrical portion thus formed bysegments II and I2 rest two more segments II and I2. The upper segment II is so placed with respect to the lower segment II that the cutoutportions II of each of these segments align to form a round hole I5through which the oil burner pipe 0 may project into the chamber.

A bafile ll of refractory material and of conical shape may be providedto provide additional refractory surface and thus increase the emciencyof the furnace. When such baille is provided, it may be supported on theupper edges of thesegments i I and I2 by means of refractory legs IQ, ofwhich there are three, and these space the baflie from the segments.

The various shell segments are made in several lengths so that selectedones may be used for the purpose of providing different lengths for thecombustion chamber as a whole. All the sectors and segments are soproportioned that they may be inserted into the furnace through the firedoor'opening and assembled within the furnace; the shell segments arethick enough and arcuately long enough to be capable of standing inplace, when assembled, during the pouring and settng of the cementbacking D, without themselves requiring cement for causing them toadhere in assembly. The only cement that is used for assembly purposesis the cement that is used to secure the supports I9 to the shell and tothe baffle itself.

By virtue of the sectional construction of the chamber, stressesincident to expansion and contraction do not cause rupturing of thechamber or the sections, these being free to expand and contract.

Now having described an embodiment of the invention hereof, reference ishad to the claim for a definition of the invention.

I claim:

A vertical oil burnerfurnace provided with a relatively small firingopening and a fire door, a vertical cylinder of fire resisting cementengaging and lining the interior wall of the furnace, a combustionchamber of refractory material comprising a flat base made up of fiatsectors and a vertical cylinder shell composed of a relatively smallnumber of annuli, each made up of a relatively small number of arcuatesegments, each segment having a length and height considerably greaterthan its thickness and edges that are fiat and plain, each segment andsector being so proportioned with respect to the firing opening as to beinsertable into the furnace through the opening, the segments being sothick and of such arcuate length that they can be assembled into a shellby being disposed on one another edgewise, and that when assembled theywill maintain their assembled position without being adhesively securedto or interlocked to one another, all this being true even though theshell, when assembled, has its vertical surface out of contact with thefurnace wall, and even though the cement lining or filler is not -inplace, the shell parts being so proportioned that they will maintainthemselves in assembly while the cement lining or filling is beingpoured in and is setting in place around and in contact with the shell.

BERNARD A. PETERSON.

